OP7 pro, this is the procedure I followed but the launcher keeps crashing (especially if from the home you want to enter the "home settings" menu, it practically does not work) and when I activate the screen from off it has a bug with the background.
Is it possible that vendor.img has something to do with it (which I can't find anywhere?) Or have I not paid much attention to A / B slots?)
Stable OOS 10 EU (and again with GLOBAL)
Format Data and convert to F2FS
Again Fastboot TWRP
first flash OOS twice so you have it in both slots.